The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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Copernicus Sentinel-4 is an ultraviolet, visible and near-infrared spectrometer carried on the Meteosat Third Generation Sounder (MTG-S) satellites. The mission also makes use of data from MTG’s infrared sounder instrument, and also from the flexible combined imager and lightning imager, both of which are carried on the Meteosat Third Generation Imager (MTG-I) satellites. From geostationary orbit, Sentinel-4 delivers data every hour. Complementing Sentinel-5, it provides information on a wide range of trace gases and pollutants, such as nitrogen dioxide, sulphur dioxide and aerosols to forecast and monitor air quality over Europe. It also provides information on ozone and solar radiation for UV forecasting, and contributes to climate monitoring.